confcmd

support command flags to as env and injected from env
support command flags can be parsed by Unmarshaller if it was implemented.
support flag short, such as uname -s
support flag without a value, such as uname --kernel-name to print kernel name
support persistence flag
complete golang reference doc from srouce code
executor of generating golang command dockerfile
executor of generating golang command makefile
executor of generating golang project makefile
executor of generating github ci workflow ymls

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